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Device and method for identifying creases in banknotes

A recognition method and a technology of a recognition device, which are applied to the authenticity inspection of banknotes, processing coins or valuable banknotes, image data processing, etc., and can solve problems affecting banknote recognition, etc.

Active Publication Date: 2017-02-01
GRG BAKING EQUIP CO LTD
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Problems solved by technology

[0004] In order to solve the problem that the contact image sensor has a certain temperature characteristic in the prior art, which seriously affects the recognition of banknote wrinkles, the present invention provides a banknote wrinkle recognition device, which adopts a new image acquisition method to improve the recognition rate of banknote wrinkles

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  • Device and method for identifying creases in banknotes
  • Device and method for identifying creases in banknotes
  • Device and method for identifying creases in banknotes

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Embodiment Construction

[0037] In order to further illustrate the banknote wrinkle recognition method and device provided by the present invention, this embodiment will be described in detail with reference to the drawings.

[0038] This embodiment provides a method for identifying paper currency creases, the realization device of the method is as follows: figure 1As shown, the banknote wrinkle identification device includes a transparent protective body 1 , a rectangular grating 3 , a laser light source 4 , an imaging lens group 5 , an area array photoelectric sensor 6 and an information processing module 7 . The laser light source 4 is used to emit laser light; the rectangular grating 3 is located above the laser light source 4, and is used to modulate the laser light 4 on the surface of banknotes into stripes that change in brightness and darkness according to certain rules; the area array photoelectric sensor 6 is used for image collection; The imaging lens group 5 is located above the area array...

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Abstract

The invention relates to an identification device and method for banknote creases. The paper currency wrinkle recognition device includes: a laser light source, used to emit laser light; a rectangular grating, located above the laser light source, used to modulate the laser light on the surface of the paper money into stripes that change in brightness and darkness according to a certain rule; A side-array photoelectric sensor, used for image collection; an imaging lens group, located above the area-array photoelectric sensor, for converging banknote surface images onto the area-array photoelectric sensor; and a signal processing module, which is connected to the surface-array photoelectric sensor The array of photoelectric sensors is electrically connected for image signal processing. The banknote wrinkle recognition method implemented by the device transforms the detection of whether there are wrinkles in the banknote into the detection of whether the grating stripe feature image of the projected grating is curved, effectively avoiding the color cast phenomenon caused by the change of the gray value of the banknote acquisition image itself under different temperatures The influence on paper money wrinkle recognition improves the paper money wrinkle recognition rate.

Description

technical field [0001] The invention relates to a non-contact optical detection technology, in particular to a paper money wrinkle recognition device and method. Background technique [0002] my country is a country with a large population, and the circulation of cash is huge. According to the statistics of the People's Bank of China: As of the first quarter of 2014, the total amount of currency in circulation in China reached 6.7 trillion yuan. Damaged banknotes in circulation account for a large proportion, and it is quite difficult for all banks to deal with banknotes, such as ordering, pickiness, and division of editions. In order to improve the cleanliness of RMB in circulation and maintain the reputation of RMB, the People's Bank of China has formulated the "Critical Criteria for Renminbi Unsuitable for Circulation", in which banknotes with obvious wrinkles or deformations are one of the situations of RMB that are not suitable for circulation. Therefore, it is necess...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07D7/202G07D7/183
CPCG07D7/121G07D7/20G07D7/183G06T2207/10152G06T2207/20076G06T2207/20081G06T2207/20084G06T7/521G06T7/579
Inventor 罗攀峰梁添才金晓峰张永
Owner GRG BAKING EQUIP CO LTD
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